tests: Rewrite tests for subs.js using zjquery.
tests: Rewrite tests for subs.js using zjquery.

dhcrzf/zulip,andersk/zulip,andersk/zulip,shubhamdhama/zulip,brainwane/zulip,rishig/zulip,hackerkid/zulip,brainwane/zulip,kou/zulip,showell/zulip,eeshangarg/zulip,hackerkid/zulip,andersk/zulip,shubhamdhama/zulip,timabbott/zulip,eeshangarg/zulip,tommyip/zulip,showell/zulip,jackrzhang/zulip,eeshangarg/zulip,timabbott/zulip,rishig/zulip,kou/zulip,andersk/zulip,tommyip/zulip,kou/zulip,punchagan/zulip,synicalsyntax/zulip,showell/zulip,dhcrzf/zulip,rht/zulip,brainwane/zulip,hackerkid/zulip,hackerkid/zulip,jackrzhang/zulip,zulip/zulip,dhcrzf/zulip,brainwane/zulip,hackerkid/zulip,rht/zulip,tommyip/zulip,brainwane/zulip,punchagan/zulip,jackrzhang/zulip,eeshangarg/zulip,zulip/zulip,zulip/zulip,andersk/zulip,shubhamdhama/zulip,rht/zulip,hackerkid/zulip,timabbott/zulip,shubhamdhama/zulip,synicalsyntax/zulip,shubhamdhama/zulip,rishig/zulip,jackrzhang/zulip,kou/zulip,dhcrzf/zulip,synicalsyntax/zulip,showell/zulip,jackrzhang/zulip,brainwane/zulip,tommyip/zulip,kou/zulip,kou/zulip,rishig/zulip,tommyip/zulip,rht/zulip,zulip/zulip,timabbott/zulip,tommyip/zulip,rishig/zulip,punchagan/zulip,hackerkid/zulip,synicalsyntax/zulip,eeshangarg/zulip,andersk/zulip,zulip/zulip,dhcrzf/zulip,eeshangarg/zulip,rishig/zulip,andersk/zulip,shubhamdhama/zulip,zulip/zulip,showell/zulip,jackrzhang/zulip,synicalsyntax/zulip,showell/zulip,brainwane/zulip,timabbott/zulip,rishig/zulip,showell/zulip,synicalsyntax/zulip,timabbott/zulip,timabbott/zulip,jackrzhang/zulip,dhcrzf/zulip,kou/zulip,tommyip/zulip,dhcrzf/zulip,eeshangarg/zulip,rht/zulip,punchagan/zulip,synicalsyntax/zulip,punchagan/zulip,punchagan/zulip,shubhamdhama/zulip,rht/zulip,zulip/zulip,punchagan/zulip,rht/zulip